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Rotary Claw Vacuum Pumps

Selectorr oil-less rotary claw vacuum pumps provide high efficiency on a multitude of applications. Direct driven by Nema flange motors, these pumps are equipped with anti suck-back valves and exhaust silencers.

All models can be operated continuously with minimal maintenance required. Selectorr claws are well suited for soil remediation, medical/lab vacuum, pneumatic conveying, and packaging.

Rotary Claw Vacuum Pumps: Oil-less
MODEL C2 C3C C5C C7LC C10C C15LC C15C C30
Part # (with motor) 264341 264363 264364 264365 264366 264367 264368 264345
Part # (without motor) 264341-LM 264363-LM 264364-LM 264365-LM 264366-LM 264367-LM 264368-LM 264345-LM
Motor HP 60 Hz 2 3 5 7.5 10 15 15 30
RPM 60/50 HZ 3450/2850 3450/2850 3450/2850 3450/2850 3450/2850 3450/2850 3450/2850 3450/2850
Inlet/Discharge Connections 1"/1" 1 1/2" 1 1/2" 2" 2" 3" 3" 4"*
dB(A), average 60 Hz 80 75 75 80 79 76 77 85
Approximate Weight Pump Only (lb.) 141 280 302 514 548 741 750 1730
Approximate Weight with Motor (lb.) 185 370 445 747 787 1063 1237 2135
Gear Box Oil Capacity (quarts) 0.4 0.5 0.5 1.0 1.0 2.0 2.0 3.4
Parts & Accessories more info more info more info more info more info more info more info more info
Dimensions drawing drawing drawing drawing drawing drawing drawing drawing
Manual English
ACFM @ 0" 40 70 112 177 212 283 352 670
ACFM @ 10" 36 68 111 165 196 274 352 635
ACFM @ 15" 34 66 108 160 192 265 352 615
ACFM @ 19" 33 63 106 154 187 260 350 600
ACFM @ 22" 32 62 104 150 181 251 330 580
ACFM @ 25" 30 60 100 147 174 N.A. N.A. N.A.
Ultimate Vacuum, Max, " Hg. 27" 25" 25" 25" 25" 25" 25" 26"
Ultimate Vacuum, Continuous, " Hg. 26" 25" 25" 24" 24" 24" 23" 24"
SCFM @19" Hg. 12 23 39 56 69 95 128 220
* C30 inlet and discharge ports have flanged connections.


Rotary claw vacuum pumps can operate continuously and dependably for long periods of time. Inlet filters are typically used for both vacuum and compressor applications in order to trap contaminants from entering the pumping chamber.

A claw vacuum pump consists of two rotors. The rotors turn in opposite directions, without contact, with very tight clearances. They are synchronized via a precision gear. As the claw moves over the suction connection and the axial suction channel inlet, gas is sucked into the compression chamber.

The revolving rotors move gas from the suction side to the pressure side. Then it is compressed by the reduction of the volume between the rotors until the lower rotor uncovers the discharge channel. This "internal compression" leads to high differential pressures at efficiencies of more than 60%. To remove the heat generated by the compression process, cooling air is sucked in between the compression housing and a silencing cover before leaving the pump.

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